I'll admit, at first glance, many will likely push Light's End aside, thinking the visuals are a direct proportion to the games' quality. However, as with most cases of such closed-mindedness, those people would be wrong.
While it is true that the graphical quality of the game isn't top-notch, the characters and story more than make up for it. With dozens of characters to meet and even take control of over the course of the game, this quick games' story is fleshed it in some very interesting ways.
As you start the game, you're introduced to a young girl residing in a small mining community, living in a country struck by political and occasionally violent turmoil. As events progress, a strange white light found at the communities' dig site appears before the young girl and enters her body. After this point, it quickly becomes apparent that you don't actually lay as the girl in question: you are actually the light the girl discovered, holding the ability to enter any of the major characters (and some minor) you encounter, allowing the story to be told from numerous, albeit short yet significant, points.
The gameplay and design is simple. You traverse top-down 2D planes of different locations in your quest, talking to the surrounding characters and interacting with the environment in order to continue on. As such, this is more of an RPG-lite, rather than a full-fledged RPG adventure. There's no interactive fighting to be had; the entire game is essentially one giant puzzle. That's not to say it doesn't allow the game to feel like an RPG, though a little more interactivity couldn't have hurt.
Overall, though, it's still a fun experience, and lasts longer than the typical XBLIG title (my run through the game clocked in at about 2 hours). For $1, or 80 Microsoft points, I see it as a must have - an occasionally overly simple one, but a must-have nonetheless.